anyone else trying to install ruby 3.0 on a mac to run legacy applications will likely run into this, too, since openssl 1.1 has been disabled in homebrew as of a few weeks ago and is required by ruby < 3.1
here are options suggested by an rvm maintainer - I found I was able to just forcibly install openssl@1.1 by doing what's in my previous toot
https://github.com/rvm/rvm/issues/5507#issuecomment-2458706085
don't hack me